2-nitrobenzoic acid 552-16-9 BENZOIC ACID,2-NITRO MFC7 H5 N1 O4 InChI=1/C7H5NO4/c9-7(10)5-3-1-2-4-6(5)8(11)12/h1-4H,(H,9,10 benzoic acid, 2-nitro-